| Brand | Apple |
| Model | Watch Ultra 3 |
| Device Type | Smartwatch |
| Release Date | 09 September 2025 |
| Status | Available |
| Operating System | iOS |
| OS Version | watchOS 26 |
| Chipset | Apple S10 |
| CPU | Dual-core |
| CPU Cores | 2 Cores |
| Architecture | 64 bit |
| GPU | PowerVR |
| Display Type | Retina LTPO3 OLED |
| Screen Size | 1.98 inches |
| Resolution | 514x422 px |
| Pixel Density | 326 ppi |
| Screen Protection | Sapphire crystal glass |
| Brightness | 3000 nits |
| Height | 49 mm |
| Width | 44 mm |
| Thickness | 12 mm |
| Weight | 61.6 grams (Natural), 61.8 grams (Black) |
| Build | Sapphire crystal front, ceramic/sapphire crystal back, titanium frame (grade 5) |
| Colors | Natural, Black |
| Waterproof | Water Resistance: Up to 100m |
| IP Rating | IP6X |
| Ruggedness | Dust proof |
| Yes | |
| Text Message | Yes |
| Incoming Call | Yes |
| Alarm | Yes |
| Calendar Reminder | Yes |
| Timer | Yes |
| Weather | Yes |
| Battery type | Li-Ion (Lithium Ion) |
| Capacity | 599 mAh |
| Wireless Charging | Wireless, 0-80% in 45 min |
| Placement | Non-removable |
| Internal Storage | 64 GB |
| Network | 2G, 3G, 4G, 5G |
| SIM Slot | Single SIM, GSM |
| SIM Size | SIM1: eSIM |
| VoLTE | Yes |
| Speed | HSPA, LTE, 5G |
| WLAN | Wi-Fi 802.11 b/g/n, dual-band |
| Bluetooth | v5.3 |
| GPS | Yes with A-GPS, Glonass |
| NFC | Yes |
| Loudspeaker | Dual Speakers |
| Made By | US |
| Features | Accelerometer, gyro, heart rate, barometer, always-on altimeter (-500m to 9000m), compass, SpO2, VO2max, temperature (body), temperature (water), Temperature sensing (0.01˚ accuracy) Depth gauge (±1m accuracy) Ultra Wideband (UWB) support (gen2 chip) Emergency SOS via satellite |
